xref: /linux/drivers/media/usb/dvb-usb-v2/af9015.c (revision 26fbb4c8c7c3ee9a4c3b4de555a8587b5a19154e)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * DVB USB Linux driver for Afatech AF9015 DVB-T USB2.0 receiver
4  *
5  * Copyright (C) 2007 Antti Palosaari <crope@iki.fi>
6  *
7  * Thanks to Afatech who kindly provided information.
8  */
9 
10 #include "af9015.h"
11 
12 static int dvb_usb_af9015_remote;
13 module_param_named(remote, dvb_usb_af9015_remote, int, 0644);
14 MODULE_PARM_DESC(remote, "select remote");
15 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
16 
17 static int af9015_ctrl_msg(struct dvb_usb_device *d, struct req_t *req)
18 {
19 #define REQ_HDR_LEN 8 /* send header size */
20 #define ACK_HDR_LEN 2 /* rece header size */
21 	struct af9015_state *state = d_to_priv(d);
22 	struct usb_interface *intf = d->intf;
23 	int ret, wlen, rlen;
24 	u8 write = 1;
25 
26 	mutex_lock(&d->usb_mutex);
27 
28 	state->buf[0] = req->cmd;
29 	state->buf[1] = state->seq++;
30 	state->buf[2] = req->i2c_addr << 1;
31 	state->buf[3] = req->addr >> 8;
32 	state->buf[4] = req->addr & 0xff;
33 	state->buf[5] = req->mbox;
34 	state->buf[6] = req->addr_len;
35 	state->buf[7] = req->data_len;
36 
37 	switch (req->cmd) {
38 	case GET_CONFIG:
39 	case READ_MEMORY:
40 	case RECONNECT_USB:
41 		write = 0;
42 		break;
43 	case READ_I2C:
44 		write = 0;
45 		state->buf[2] |= 0x01; /* set I2C direction */
46 		fallthrough;
47 	case WRITE_I2C:
48 		state->buf[0] = READ_WRITE_I2C;
49 		break;
50 	case WRITE_MEMORY:
51 		if (((req->addr & 0xff00) == 0xff00) ||
52 		    ((req->addr & 0xff00) == 0xae00))
53 			state->buf[0] = WRITE_VIRTUAL_MEMORY;
54 	case WRITE_VIRTUAL_MEMORY:
55 	case COPY_FIRMWARE:
56 	case DOWNLOAD_FIRMWARE:
57 	case BOOT:
58 		break;
59 	default:
60 		dev_err(&intf->dev, "unknown cmd %d\n", req->cmd);
61 		ret = -EIO;
62 		goto error;
63 	}
64 
65 	/* Buffer overflow check */
66 	if ((write && (req->data_len > BUF_LEN - REQ_HDR_LEN)) ||
67 	    (!write && (req->data_len > BUF_LEN - ACK_HDR_LEN))) {
68 		dev_err(&intf->dev, "too much data, cmd %u, len %u\n",
69 			req->cmd, req->data_len);
70 		ret = -EINVAL;
71 		goto error;
72 	}
73 
74 	/*
75 	 * Write receives seq + status = 2 bytes
76 	 * Read receives seq + status + data = 2 + N bytes
77 	 */
78 	wlen = REQ_HDR_LEN;
79 	rlen = ACK_HDR_LEN;
80 	if (write) {
81 		wlen += req->data_len;
82 		memcpy(&state->buf[REQ_HDR_LEN], req->data, req->data_len);
83 	} else {
84 		rlen += req->data_len;
85 	}
86 
87 	/* no ack for these packets */
88 	if (req->cmd == DOWNLOAD_FIRMWARE || req->cmd == RECONNECT_USB)
89 		rlen = 0;
90 
91 	ret = dvb_usbv2_generic_rw_locked(d, state->buf, wlen,
92 					  state->buf, rlen);
93 	if (ret)
94 		goto error;
95 
96 	/* check status */
97 	if (rlen && state->buf[1]) {
98 		dev_err(&intf->dev, "cmd failed %u\n", state->buf[1]);
99 		ret = -EIO;
100 		goto error;
101 	}
102 
103 	/* read request, copy returned data to return buf */
104 	if (!write)
105 		memcpy(req->data, &state->buf[ACK_HDR_LEN], req->data_len);
106 error:
107 	mutex_unlock(&d->usb_mutex);
108 
109 	return ret;
110 }
111 
112 static int af9015_write_reg_i2c(struct dvb_usb_device *d, u8 addr, u16 reg,
113 				u8 val)
114 {
115 	struct af9015_state *state = d_to_priv(d);
116 	struct req_t req = {WRITE_I2C, addr, reg, 1, 1, 1, &val};
117 
118 	if (addr == state->af9013_i2c_addr[0] ||
119 	    addr == state->af9013_i2c_addr[1])
120 		req.addr_len = 3;
121 
122 	return af9015_ctrl_msg(d, &req);
123 }
124 
125 static int af9015_read_reg_i2c(struct dvb_usb_device *d, u8 addr, u16 reg,
126 			       u8 *val)
127 {
128 	struct af9015_state *state = d_to_priv(d);
129 	struct req_t req = {READ_I2C, addr, reg, 0, 1, 1, val};
130 
131 	if (addr == state->af9013_i2c_addr[0] ||
132 	    addr == state->af9013_i2c_addr[1])
133 		req.addr_len = 3;
134 
135 	return af9015_ctrl_msg(d, &req);
136 }
137 
138 static int af9015_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
139 			   int num)
140 {
141 	struct dvb_usb_device *d = i2c_get_adapdata(adap);
142 	struct af9015_state *state = d_to_priv(d);
143 	struct usb_interface *intf = d->intf;
144 	int ret;
145 	u16 addr;
146 	u8 mbox, addr_len;
147 	struct req_t req;
148 
149 	/*
150 	 * I2C multiplexing:
151 	 * There could be two tuners, both using same I2C address. Demodulator
152 	 * I2C-gate is only possibility to select correct tuner.
153 	 *
154 	 * ...........................................
155 	 * . AF9015 integrates AF9013 demodulator    .
156 	 * . ____________               ____________ .             ____________
157 	 * .|   USB IF   |             |   demod    |.            |   tuner    |
158 	 * .|------------|             |------------|.            |------------|
159 	 * .|   AF9015   |             |   AF9013   |.            |   MXL5003  |
160 	 * .|            |--+--I2C-----|-----/ -----|.----I2C-----|            |
161 	 * .|            |  |          | addr 0x1c  |.            |  addr 0x63 |
162 	 * .|____________|  |          |____________|.            |____________|
163 	 * .................|.........................
164 	 *                  |           ____________               ____________
165 	 *                  |          |   demod    |             |   tuner    |
166 	 *                  |          |------------|             |------------|
167 	 *                  |          |   AF9013   |             |   MXL5003  |
168 	 *                  +--I2C-----|-----/ -----|-----I2C-----|            |
169 	 *                             | addr 0x1d  |             |  addr 0x63 |
170 	 *                             |____________|             |____________|
171 	 */
172 
173 	if (msg[0].len == 0 || msg[0].flags & I2C_M_RD) {
174 		addr = 0x0000;
175 		mbox = 0;
176 		addr_len = 0;
177 	} else if (msg[0].len == 1) {
178 		addr = msg[0].buf[0];
179 		mbox = 0;
180 		addr_len = 1;
181 	} else if (msg[0].len == 2) {
182 		addr = msg[0].buf[0] << 8 | msg[0].buf[1] << 0;
183 		mbox = 0;
184 		addr_len = 2;
185 	} else {
186 		addr = msg[0].buf[0] << 8 | msg[0].buf[1] << 0;
187 		mbox = msg[0].buf[2];
188 		addr_len = 3;
189 	}
190 
191 	if (num == 1 && !(msg[0].flags & I2C_M_RD)) {
192 		/* i2c write */
193 		if (msg[0].len > 21) {
194 			ret = -EOPNOTSUPP;
195 			goto err;
196 		}
197 		if (msg[0].addr == state->af9013_i2c_addr[0])
198 			req.cmd = WRITE_MEMORY;
199 		else
200 			req.cmd = WRITE_I2C;
201 		req.i2c_addr = msg[0].addr;
202 		req.addr = addr;
203 		req.mbox = mbox;
204 		req.addr_len = addr_len;
205 		req.data_len = msg[0].len - addr_len;
206 		req.data = &msg[0].buf[addr_len];
207 		ret = af9015_ctrl_msg(d, &req);
208 	} else if (num == 2 && !(msg[0].flags & I2C_M_RD) &&
209 		   (msg[1].flags & I2C_M_RD)) {
210 		/* i2c write + read */
211 		if (msg[0].len > 3 || msg[1].len > 61) {
212 			ret = -EOPNOTSUPP;
213 			goto err;
214 		}
215 		if (msg[0].addr == state->af9013_i2c_addr[0])
216 			req.cmd = READ_MEMORY;
217 		else
218 			req.cmd = READ_I2C;
219 		req.i2c_addr = msg[0].addr;
220 		req.addr = addr;
221 		req.mbox = mbox;
222 		req.addr_len = addr_len;
223 		req.data_len = msg[1].len;
224 		req.data = &msg[1].buf[0];
225 		ret = af9015_ctrl_msg(d, &req);
226 	} else if (num == 1 && (msg[0].flags & I2C_M_RD)) {
227 		/* i2c read */
228 		if (msg[0].len > 61) {
229 			ret = -EOPNOTSUPP;
230 			goto err;
231 		}
232 		if (msg[0].addr == state->af9013_i2c_addr[0]) {
233 			ret = -EINVAL;
234 			goto err;
235 		}
236 		req.cmd = READ_I2C;
237 		req.i2c_addr = msg[0].addr;
238 		req.addr = addr;
239 		req.mbox = mbox;
240 		req.addr_len = addr_len;
241 		req.data_len = msg[0].len;
242 		req.data = &msg[0].buf[0];
243 		ret = af9015_ctrl_msg(d, &req);
244 	} else {
245 		ret = -EOPNOTSUPP;
246 		dev_dbg(&intf->dev, "unknown msg, num %u\n", num);
247 	}
248 	if (ret)
249 		goto err;
250 
251 	return num;
252 err:
253 	dev_dbg(&intf->dev, "failed %d\n", ret);
254 	return ret;
255 }
256 
257 static u32 af9015_i2c_func(struct i2c_adapter *adapter)
258 {
259 	return I2C_FUNC_I2C;
260 }
261 
262 static struct i2c_algorithm af9015_i2c_algo = {
263 	.master_xfer = af9015_i2c_xfer,
264 	.functionality = af9015_i2c_func,
265 };
266 
267 static int af9015_identify_state(struct dvb_usb_device *d, const char **name)
268 {
269 	struct usb_interface *intf = d->intf;
270 	int ret;
271 	u8 reply;
272 	struct req_t req = {GET_CONFIG, 0, 0, 0, 0, 1, &reply};
273 
274 	ret = af9015_ctrl_msg(d, &req);
275 	if (ret)
276 		return ret;
277 
278 	dev_dbg(&intf->dev, "reply %02x\n", reply);
279 
280 	if (reply == 0x02)
281 		ret = WARM;
282 	else
283 		ret = COLD;
284 
285 	return ret;
286 }
287 
288 static int af9015_download_firmware(struct dvb_usb_device *d,
289 				    const struct firmware *firmware)
290 {
291 	struct af9015_state *state = d_to_priv(d);
292 	struct usb_interface *intf = d->intf;
293 	int ret, i, rem;
294 	struct req_t req = {DOWNLOAD_FIRMWARE, 0, 0, 0, 0, 0, NULL};
295 	u16 checksum;
296 
297 	dev_dbg(&intf->dev, "\n");
298 
299 	/* Calc checksum, we need it when copy firmware to slave demod */
300 	for (i = 0, checksum = 0; i < firmware->size; i++)
301 		checksum += firmware->data[i];
302 
303 	state->firmware_size = firmware->size;
304 	state->firmware_checksum = checksum;
305 
306 	#define LEN_MAX (BUF_LEN - REQ_HDR_LEN) /* Max payload size */
307 	for (rem = firmware->size; rem > 0; rem -= LEN_MAX) {
308 		req.data_len = min(LEN_MAX, rem);
309 		req.data = (u8 *)&firmware->data[firmware->size - rem];
310 		req.addr = 0x5100 + firmware->size - rem;
311 		ret = af9015_ctrl_msg(d, &req);
312 		if (ret) {
313 			dev_err(&intf->dev, "firmware download failed %d\n",
314 				ret);
315 			goto err;
316 		}
317 	}
318 
319 	req.cmd = BOOT;
320 	req.data_len = 0;
321 	ret = af9015_ctrl_msg(d, &req);
322 	if (ret) {
323 		dev_err(&intf->dev, "firmware boot failed %d\n", ret);
324 		goto err;
325 	}
326 
327 	return 0;
328 err:
329 	dev_dbg(&intf->dev, "failed %d\n", ret);
330 	return ret;
331 }
332 
333 #define AF9015_EEPROM_SIZE 256
334 /* 2^31 + 2^29 - 2^25 + 2^22 - 2^19 - 2^16 + 1 */
335 #define GOLDEN_RATIO_PRIME_32 0x9e370001UL
336 
337 /* hash (and dump) eeprom */
338 static int af9015_eeprom_hash(struct dvb_usb_device *d)
339 {
340 	struct af9015_state *state = d_to_priv(d);
341 	struct usb_interface *intf = d->intf;
342 	int ret, i;
343 	u8 buf[AF9015_EEPROM_SIZE];
344 	struct req_t req = {READ_I2C, AF9015_I2C_EEPROM, 0, 0, 1, 1, NULL};
345 
346 	/* read eeprom */
347 	for (i = 0; i < AF9015_EEPROM_SIZE; i++) {
348 		req.addr = i;
349 		req.data = &buf[i];
350 		ret = af9015_ctrl_msg(d, &req);
351 		if (ret < 0)
352 			goto err;
353 	}
354 
355 	/* calculate checksum */
356 	for (i = 0; i < AF9015_EEPROM_SIZE / sizeof(u32); i++) {
357 		state->eeprom_sum *= GOLDEN_RATIO_PRIME_32;
358 		state->eeprom_sum += le32_to_cpu(((__le32 *)buf)[i]);
359 	}
360 
361 	for (i = 0; i < AF9015_EEPROM_SIZE; i += 16)
362 		dev_dbg(&intf->dev, "%*ph\n", 16, buf + i);
363 
364 	dev_dbg(&intf->dev, "eeprom sum %.8x\n", state->eeprom_sum);
365 	return 0;
366 err:
367 	dev_dbg(&intf->dev, "failed %d\n", ret);
368 	return ret;
369 }
370 
371 static int af9015_read_config(struct dvb_usb_device *d)
372 {
373 	struct af9015_state *state = d_to_priv(d);
374 	struct usb_interface *intf = d->intf;
375 	int ret;
376 	u8 val, i, offset = 0;
377 	struct req_t req = {READ_I2C, AF9015_I2C_EEPROM, 0, 0, 1, 1, &val};
378 
379 	dev_dbg(&intf->dev, "\n");
380 
381 	/* IR remote controller */
382 	req.addr = AF9015_EEPROM_IR_MODE;
383 	/* first message will timeout often due to possible hw bug */
384 	for (i = 0; i < 4; i++) {
385 		ret = af9015_ctrl_msg(d, &req);
386 		if (!ret)
387 			break;
388 	}
389 	if (ret)
390 		goto error;
391 
392 	ret = af9015_eeprom_hash(d);
393 	if (ret)
394 		goto error;
395 
396 	state->ir_mode = val;
397 	dev_dbg(&intf->dev, "ir mode %02x\n", val);
398 
399 	/* TS mode - one or two receivers */
400 	req.addr = AF9015_EEPROM_TS_MODE;
401 	ret = af9015_ctrl_msg(d, &req);
402 	if (ret)
403 		goto error;
404 
405 	state->dual_mode = val;
406 	dev_dbg(&intf->dev, "ts mode %02x\n", state->dual_mode);
407 
408 	state->af9013_i2c_addr[0] = AF9015_I2C_DEMOD;
409 
410 	if (state->dual_mode) {
411 		/* read 2nd demodulator I2C address */
412 		req.addr = AF9015_EEPROM_DEMOD2_I2C;
413 		ret = af9015_ctrl_msg(d, &req);
414 		if (ret)
415 			goto error;
416 
417 		state->af9013_i2c_addr[1] = val >> 1;
418 	}
419 
420 	for (i = 0; i < state->dual_mode + 1; i++) {
421 		if (i == 1)
422 			offset = AF9015_EEPROM_OFFSET;
423 		/* xtal */
424 		req.addr = AF9015_EEPROM_XTAL_TYPE1 + offset;
425 		ret = af9015_ctrl_msg(d, &req);
426 		if (ret)
427 			goto error;
428 		switch (val) {
429 		case 0:
430 			state->af9013_pdata[i].clk = 28800000;
431 			break;
432 		case 1:
433 			state->af9013_pdata[i].clk = 20480000;
434 			break;
435 		case 2:
436 			state->af9013_pdata[i].clk = 28000000;
437 			break;
438 		case 3:
439 			state->af9013_pdata[i].clk = 25000000;
440 			break;
441 		}
442 		dev_dbg(&intf->dev, "[%d] xtal %02x, clk %u\n",
443 			i, val, state->af9013_pdata[i].clk);
444 
445 		/* IF frequency */
446 		req.addr = AF9015_EEPROM_IF1H + offset;
447 		ret = af9015_ctrl_msg(d, &req);
448 		if (ret)
449 			goto error;
450 
451 		state->af9013_pdata[i].if_frequency = val << 8;
452 
453 		req.addr = AF9015_EEPROM_IF1L + offset;
454 		ret = af9015_ctrl_msg(d, &req);
455 		if (ret)
456 			goto error;
457 
458 		state->af9013_pdata[i].if_frequency += val;
459 		state->af9013_pdata[i].if_frequency *= 1000;
460 		dev_dbg(&intf->dev, "[%d] if frequency %u\n",
461 			i, state->af9013_pdata[i].if_frequency);
462 
463 		/* MT2060 IF1 */
464 		req.addr = AF9015_EEPROM_MT2060_IF1H  + offset;
465 		ret = af9015_ctrl_msg(d, &req);
466 		if (ret)
467 			goto error;
468 		state->mt2060_if1[i] = val << 8;
469 		req.addr = AF9015_EEPROM_MT2060_IF1L + offset;
470 		ret = af9015_ctrl_msg(d, &req);
471 		if (ret)
472 			goto error;
473 		state->mt2060_if1[i] += val;
474 		dev_dbg(&intf->dev, "[%d] MT2060 IF1 %u\n",
475 			i, state->mt2060_if1[i]);
476 
477 		/* tuner */
478 		req.addr =  AF9015_EEPROM_TUNER_ID1 + offset;
479 		ret = af9015_ctrl_msg(d, &req);
480 		if (ret)
481 			goto error;
482 		switch (val) {
483 		case AF9013_TUNER_ENV77H11D5:
484 		case AF9013_TUNER_MT2060:
485 		case AF9013_TUNER_QT1010:
486 		case AF9013_TUNER_UNKNOWN:
487 		case AF9013_TUNER_MT2060_2:
488 		case AF9013_TUNER_TDA18271:
489 		case AF9013_TUNER_QT1010A:
490 		case AF9013_TUNER_TDA18218:
491 			state->af9013_pdata[i].spec_inv = 1;
492 			break;
493 		case AF9013_TUNER_MXL5003D:
494 		case AF9013_TUNER_MXL5005D:
495 		case AF9013_TUNER_MXL5005R:
496 		case AF9013_TUNER_MXL5007T:
497 			state->af9013_pdata[i].spec_inv = 0;
498 			break;
499 		case AF9013_TUNER_MC44S803:
500 			state->af9013_pdata[i].gpio[1] = AF9013_GPIO_LO;
501 			state->af9013_pdata[i].spec_inv = 1;
502 			break;
503 		default:
504 			dev_err(&intf->dev,
505 				"tuner id %02x not supported, please report!\n",
506 				val);
507 			return -ENODEV;
508 		}
509 
510 		state->af9013_pdata[i].tuner = val;
511 		dev_dbg(&intf->dev, "[%d] tuner id %02x\n", i, val);
512 	}
513 
514 error:
515 	if (ret)
516 		dev_err(&intf->dev, "eeprom read failed %d\n", ret);
517 
518 	/*
519 	 * AverMedia AVerTV Volar Black HD (A850) device have bad EEPROM
520 	 * content :-( Override some wrong values here. Ditto for the
521 	 * AVerTV Red HD+ (A850T) device.
522 	 */
523 	if (le16_to_cpu(d->udev->descriptor.idVendor) == USB_VID_AVERMEDIA &&
524 	    ((le16_to_cpu(d->udev->descriptor.idProduct) == USB_PID_AVERMEDIA_A850) ||
525 	    (le16_to_cpu(d->udev->descriptor.idProduct) == USB_PID_AVERMEDIA_A850T))) {
526 		dev_dbg(&intf->dev, "AverMedia A850: overriding config\n");
527 		/* disable dual mode */
528 		state->dual_mode = 0;
529 
530 		/* set correct IF */
531 		state->af9013_pdata[0].if_frequency = 4570000;
532 	}
533 
534 	return ret;
535 }
536 
537 static int af9015_get_stream_config(struct dvb_frontend *fe, u8 *ts_type,
538 				    struct usb_data_stream_properties *stream)
539 {
540 	struct dvb_usb_device *d = fe_to_d(fe);
541 	struct usb_interface *intf = d->intf;
542 
543 	dev_dbg(&intf->dev, "adap %u\n", fe_to_adap(fe)->id);
544 
545 	if (d->udev->speed == USB_SPEED_FULL)
546 		stream->u.bulk.buffersize = 5 * 188;
547 
548 	return 0;
549 }
550 
551 static int af9015_streaming_ctrl(struct dvb_frontend *fe, int onoff)
552 {
553 	struct dvb_usb_device *d = fe_to_d(fe);
554 	struct af9015_state *state = d_to_priv(d);
555 	struct usb_interface *intf = d->intf;
556 	int ret;
557 	unsigned int utmp1, utmp2, reg1, reg2;
558 	u8 buf[2];
559 	const unsigned int adap_id = fe_to_adap(fe)->id;
560 
561 	dev_dbg(&intf->dev, "adap id %d, onoff %d\n", adap_id, onoff);
562 
563 	if (!state->usb_ts_if_configured[adap_id]) {
564 		dev_dbg(&intf->dev, "set usb and ts interface\n");
565 
566 		/* USB IF stream settings */
567 		utmp1 = (d->udev->speed == USB_SPEED_FULL ? 5 : 87) * 188 / 4;
568 		utmp2 = (d->udev->speed == USB_SPEED_FULL ? 64 : 512) / 4;
569 
570 		buf[0] = (utmp1 >> 0) & 0xff;
571 		buf[1] = (utmp1 >> 8) & 0xff;
572 		if (adap_id == 0) {
573 			/* 1st USB IF (EP4) stream settings */
574 			reg1 = 0xdd88;
575 			reg2 = 0xdd0c;
576 		} else {
577 			/* 2nd USB IF (EP5) stream settings */
578 			reg1 = 0xdd8a;
579 			reg2 = 0xdd0d;
580 		}
581 		ret = regmap_bulk_write(state->regmap, reg1, buf, 2);
582 		if (ret)
583 			goto err;
584 		ret = regmap_write(state->regmap, reg2, utmp2);
585 		if (ret)
586 			goto err;
587 
588 		/* TS IF settings */
589 		if (state->dual_mode) {
590 			utmp1 = 0x01;
591 			utmp2 = 0x10;
592 		} else {
593 			utmp1 = 0x00;
594 			utmp2 = 0x00;
595 		}
596 		ret = regmap_update_bits(state->regmap, 0xd50b, 0x01, utmp1);
597 		if (ret)
598 			goto err;
599 		ret = regmap_update_bits(state->regmap, 0xd520, 0x10, utmp2);
600 		if (ret)
601 			goto err;
602 
603 		state->usb_ts_if_configured[adap_id] = true;
604 	}
605 
606 	if (adap_id == 0 && onoff) {
607 		/* Adapter 0 stream on. EP4: clear NAK, enable, clear reset */
608 		ret = regmap_update_bits(state->regmap, 0xdd13, 0x20, 0x00);
609 		if (ret)
610 			goto err;
611 		ret = regmap_update_bits(state->regmap, 0xdd11, 0x20, 0x20);
612 		if (ret)
613 			goto err;
614 		ret = regmap_update_bits(state->regmap, 0xd507, 0x04, 0x00);
615 		if (ret)
616 			goto err;
617 	} else if (adap_id == 1 && onoff) {
618 		/* Adapter 1 stream on. EP5: clear NAK, enable, clear reset */
619 		ret = regmap_update_bits(state->regmap, 0xdd13, 0x40, 0x00);
620 		if (ret)
621 			goto err;
622 		ret = regmap_update_bits(state->regmap, 0xdd11, 0x40, 0x40);
623 		if (ret)
624 			goto err;
625 		ret = regmap_update_bits(state->regmap, 0xd50b, 0x02, 0x00);
626 		if (ret)
627 			goto err;
628 	} else if (adap_id == 0 && !onoff) {
629 		/* Adapter 0 stream off. EP4: set reset, disable, set NAK */
630 		ret = regmap_update_bits(state->regmap, 0xd507, 0x04, 0x04);
631 		if (ret)
632 			goto err;
633 		ret = regmap_update_bits(state->regmap, 0xdd11, 0x20, 0x00);
634 		if (ret)
635 			goto err;
636 		ret = regmap_update_bits(state->regmap, 0xdd13, 0x20, 0x20);
637 		if (ret)
638 			goto err;
639 	} else if (adap_id == 1 && !onoff) {
640 		/* Adapter 1 stream off. EP5: set reset, disable, set NAK */
641 		ret = regmap_update_bits(state->regmap, 0xd50b, 0x02, 0x02);
642 		if (ret)
643 			goto err;
644 		ret = regmap_update_bits(state->regmap, 0xdd11, 0x40, 0x00);
645 		if (ret)
646 			goto err;
647 		ret = regmap_update_bits(state->regmap, 0xdd13, 0x40, 0x40);
648 		if (ret)
649 			goto err;
650 	}
651 
652 	return 0;
653 err:
654 	dev_dbg(&intf->dev, "failed %d\n", ret);
655 	return ret;
656 }
657 
658 static int af9015_get_adapter_count(struct dvb_usb_device *d)
659 {
660 	struct af9015_state *state = d_to_priv(d);
661 
662 	return state->dual_mode + 1;
663 }
664 
665 /* override demod callbacks for resource locking */
666 static int af9015_af9013_set_frontend(struct dvb_frontend *fe)
667 {
668 	int ret;
669 	struct af9015_state *state = fe_to_priv(fe);
670 
671 	if (mutex_lock_interruptible(&state->fe_mutex))
672 		return -EAGAIN;
673 
674 	ret = state->set_frontend[fe_to_adap(fe)->id](fe);
675 
676 	mutex_unlock(&state->fe_mutex);
677 
678 	return ret;
679 }
680 
681 /* override demod callbacks for resource locking */
682 static int af9015_af9013_read_status(struct dvb_frontend *fe,
683 				     enum fe_status *status)
684 {
685 	int ret;
686 	struct af9015_state *state = fe_to_priv(fe);
687 
688 	if (mutex_lock_interruptible(&state->fe_mutex))
689 		return -EAGAIN;
690 
691 	ret = state->read_status[fe_to_adap(fe)->id](fe, status);
692 
693 	mutex_unlock(&state->fe_mutex);
694 
695 	return ret;
696 }
697 
698 /* override demod callbacks for resource locking */
699 static int af9015_af9013_init(struct dvb_frontend *fe)
700 {
701 	int ret;
702 	struct af9015_state *state = fe_to_priv(fe);
703 
704 	if (mutex_lock_interruptible(&state->fe_mutex))
705 		return -EAGAIN;
706 
707 	ret = state->init[fe_to_adap(fe)->id](fe);
708 
709 	mutex_unlock(&state->fe_mutex);
710 
711 	return ret;
712 }
713 
714 /* override demod callbacks for resource locking */
715 static int af9015_af9013_sleep(struct dvb_frontend *fe)
716 {
717 	int ret;
718 	struct af9015_state *state = fe_to_priv(fe);
719 
720 	if (mutex_lock_interruptible(&state->fe_mutex))
721 		return -EAGAIN;
722 
723 	ret = state->sleep[fe_to_adap(fe)->id](fe);
724 
725 	mutex_unlock(&state->fe_mutex);
726 
727 	return ret;
728 }
729 
730 /* override tuner callbacks for resource locking */
731 static int af9015_tuner_init(struct dvb_frontend *fe)
732 {
733 	int ret;
734 	struct af9015_state *state = fe_to_priv(fe);
735 
736 	if (mutex_lock_interruptible(&state->fe_mutex))
737 		return -EAGAIN;
738 
739 	ret = state->tuner_init[fe_to_adap(fe)->id](fe);
740 
741 	mutex_unlock(&state->fe_mutex);
742 
743 	return ret;
744 }
745 
746 /* override tuner callbacks for resource locking */
747 static int af9015_tuner_sleep(struct dvb_frontend *fe)
748 {
749 	int ret;
750 	struct af9015_state *state = fe_to_priv(fe);
751 
752 	if (mutex_lock_interruptible(&state->fe_mutex))
753 		return -EAGAIN;
754 
755 	ret = state->tuner_sleep[fe_to_adap(fe)->id](fe);
756 
757 	mutex_unlock(&state->fe_mutex);
758 
759 	return ret;
760 }
761 
762 static int af9015_copy_firmware(struct dvb_usb_device *d)
763 {
764 	struct af9015_state *state = d_to_priv(d);
765 	struct usb_interface *intf = d->intf;
766 	int ret;
767 	unsigned long timeout;
768 	u8 val, firmware_info[4];
769 	struct req_t req = {COPY_FIRMWARE, 0, 0x5100, 0, 0, 4, firmware_info};
770 
771 	dev_dbg(&intf->dev, "\n");
772 
773 	firmware_info[0] = (state->firmware_size >> 8) & 0xff;
774 	firmware_info[1] = (state->firmware_size >> 0) & 0xff;
775 	firmware_info[2] = (state->firmware_checksum >> 8) & 0xff;
776 	firmware_info[3] = (state->firmware_checksum >> 0) & 0xff;
777 
778 	/* Check whether firmware is already running */
779 	ret = af9015_read_reg_i2c(d, state->af9013_i2c_addr[1], 0x98be, &val);
780 	if (ret)
781 		goto err;
782 
783 	dev_dbg(&intf->dev, "firmware status %02x\n", val);
784 
785 	if (val == 0x0c)
786 		return 0;
787 
788 	/* Set i2c clock to 625kHz to speed up firmware copy */
789 	ret = regmap_write(state->regmap, 0xd416, 0x04);
790 	if (ret)
791 		goto err;
792 
793 	/* Copy firmware from master demod to slave demod */
794 	ret = af9015_ctrl_msg(d, &req);
795 	if (ret) {
796 		dev_err(&intf->dev, "firmware copy cmd failed %d\n", ret);
797 		goto err;
798 	}
799 
800 	/* Set i2c clock to 125kHz */
801 	ret = regmap_write(state->regmap, 0xd416, 0x14);
802 	if (ret)
803 		goto err;
804 
805 	/* Boot firmware */
806 	ret = af9015_write_reg_i2c(d, state->af9013_i2c_addr[1], 0xe205, 0x01);
807 	if (ret)
808 		goto err;
809 
810 	/* Poll firmware ready */
811 	for (val = 0x00, timeout = jiffies + msecs_to_jiffies(1000);
812 	     !time_after(jiffies, timeout) && val != 0x0c && val != 0x04;) {
813 		msleep(20);
814 
815 		/* Check firmware status. 0c=OK, 04=fail */
816 		ret = af9015_read_reg_i2c(d, state->af9013_i2c_addr[1],
817 					  0x98be, &val);
818 		if (ret)
819 			goto err;
820 
821 		dev_dbg(&intf->dev, "firmware status %02x\n", val);
822 	}
823 
824 	dev_dbg(&intf->dev, "firmware boot took %u ms\n",
825 		jiffies_to_msecs(jiffies) - (jiffies_to_msecs(timeout) - 1000));
826 
827 	if (val == 0x04) {
828 		ret = -ENODEV;
829 		dev_err(&intf->dev, "firmware did not run\n");
830 		goto err;
831 	} else if (val != 0x0c) {
832 		ret = -ETIMEDOUT;
833 		dev_err(&intf->dev, "firmware boot timeout\n");
834 		goto err;
835 	}
836 
837 	return 0;
838 err:
839 	dev_dbg(&intf->dev, "failed %d\n", ret);
840 	return ret;
841 }
842 
843 static int af9015_af9013_frontend_attach(struct dvb_usb_adapter *adap)
844 {
845 	struct af9015_state *state = adap_to_priv(adap);
846 	struct dvb_usb_device *d = adap_to_d(adap);
847 	struct usb_interface *intf = d->intf;
848 	struct i2c_client *client;
849 	int ret;
850 
851 	dev_dbg(&intf->dev, "adap id %u\n", adap->id);
852 
853 	if (adap->id == 0) {
854 		state->af9013_pdata[0].ts_mode = AF9013_TS_MODE_USB;
855 		memcpy(state->af9013_pdata[0].api_version, "\x0\x1\x9\x0", 4);
856 		state->af9013_pdata[0].gpio[0] = AF9013_GPIO_HI;
857 		state->af9013_pdata[0].gpio[3] = AF9013_GPIO_TUNER_ON;
858 	} else if (adap->id == 1) {
859 		state->af9013_pdata[1].ts_mode = AF9013_TS_MODE_SERIAL;
860 		state->af9013_pdata[1].ts_output_pin = 7;
861 		memcpy(state->af9013_pdata[1].api_version, "\x0\x1\x9\x0", 4);
862 		state->af9013_pdata[1].gpio[0] = AF9013_GPIO_TUNER_ON;
863 		state->af9013_pdata[1].gpio[1] = AF9013_GPIO_LO;
864 
865 		/* copy firmware to 2nd demodulator */
866 		if (state->dual_mode) {
867 			/* Wait 2nd demodulator ready */
868 			msleep(100);
869 
870 			ret = af9015_copy_firmware(adap_to_d(adap));
871 			if (ret) {
872 				dev_err(&intf->dev,
873 					"firmware copy to 2nd frontend failed, will disable it\n");
874 				state->dual_mode = 0;
875 				goto err;
876 			}
877 		} else {
878 			ret = -ENODEV;
879 			goto err;
880 		}
881 	}
882 
883 	/* Add I2C demod */
884 	client = dvb_module_probe("af9013", NULL, &d->i2c_adap,
885 				  state->af9013_i2c_addr[adap->id],
886 				  &state->af9013_pdata[adap->id]);
887 	if (!client) {
888 		ret = -ENODEV;
889 		goto err;
890 	}
891 	adap->fe[0] = state->af9013_pdata[adap->id].get_dvb_frontend(client);
892 	state->demod_i2c_client[adap->id] = client;
893 
894 	/*
895 	 * AF9015 firmware does not like if it gets interrupted by I2C adapter
896 	 * request on some critical phases. During normal operation I2C adapter
897 	 * is used only 2nd demodulator and tuner on dual tuner devices.
898 	 * Override demodulator callbacks and use mutex for limit access to
899 	 * those "critical" paths to keep AF9015 happy.
900 	 */
901 	if (adap->fe[0]) {
902 		state->set_frontend[adap->id] = adap->fe[0]->ops.set_frontend;
903 		adap->fe[0]->ops.set_frontend = af9015_af9013_set_frontend;
904 		state->read_status[adap->id] = adap->fe[0]->ops.read_status;
905 		adap->fe[0]->ops.read_status = af9015_af9013_read_status;
906 		state->init[adap->id] = adap->fe[0]->ops.init;
907 		adap->fe[0]->ops.init = af9015_af9013_init;
908 		state->sleep[adap->id] = adap->fe[0]->ops.sleep;
909 		adap->fe[0]->ops.sleep = af9015_af9013_sleep;
910 	}
911 
912 	return 0;
913 err:
914 	dev_dbg(&intf->dev, "failed %d\n", ret);
915 	return ret;
916 }
917 
918 static int af9015_frontend_detach(struct dvb_usb_adapter *adap)
919 {
920 	struct af9015_state *state = adap_to_priv(adap);
921 	struct dvb_usb_device *d = adap_to_d(adap);
922 	struct usb_interface *intf = d->intf;
923 	struct i2c_client *client;
924 
925 	dev_dbg(&intf->dev, "adap id %u\n", adap->id);
926 
927 	/* Remove I2C demod */
928 	client = state->demod_i2c_client[adap->id];
929 	dvb_module_release(client);
930 
931 	return 0;
932 }
933 
934 static struct mt2060_config af9015_mt2060_config = {
935 	.i2c_address = 0x60,
936 	.clock_out = 0,
937 };
938 
939 static struct qt1010_config af9015_qt1010_config = {
940 	.i2c_address = 0x62,
941 };
942 
943 static struct tda18271_config af9015_tda18271_config = {
944 	.gate = TDA18271_GATE_DIGITAL,
945 	.small_i2c = TDA18271_16_BYTE_CHUNK_INIT,
946 };
947 
948 static struct mxl5005s_config af9015_mxl5003_config = {
949 	.i2c_address     = 0x63,
950 	.if_freq         = IF_FREQ_4570000HZ,
951 	.xtal_freq       = CRYSTAL_FREQ_16000000HZ,
952 	.agc_mode        = MXL_SINGLE_AGC,
953 	.tracking_filter = MXL_TF_DEFAULT,
954 	.rssi_enable     = MXL_RSSI_ENABLE,
955 	.cap_select      = MXL_CAP_SEL_ENABLE,
956 	.div_out         = MXL_DIV_OUT_4,
957 	.clock_out       = MXL_CLOCK_OUT_DISABLE,
958 	.output_load     = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
959 	.top		 = MXL5005S_TOP_25P2,
960 	.mod_mode        = MXL_DIGITAL_MODE,
961 	.if_mode         = MXL_ZERO_IF,
962 	.AgcMasterByte   = 0x00,
963 };
964 
965 static struct mxl5005s_config af9015_mxl5005_config = {
966 	.i2c_address     = 0x63,
967 	.if_freq         = IF_FREQ_4570000HZ,
968 	.xtal_freq       = CRYSTAL_FREQ_16000000HZ,
969 	.agc_mode        = MXL_SINGLE_AGC,
970 	.tracking_filter = MXL_TF_OFF,
971 	.rssi_enable     = MXL_RSSI_ENABLE,
972 	.cap_select      = MXL_CAP_SEL_ENABLE,
973 	.div_out         = MXL_DIV_OUT_4,
974 	.clock_out       = MXL_CLOCK_OUT_DISABLE,
975 	.output_load     = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
976 	.top		 = MXL5005S_TOP_25P2,
977 	.mod_mode        = MXL_DIGITAL_MODE,
978 	.if_mode         = MXL_ZERO_IF,
979 	.AgcMasterByte   = 0x00,
980 };
981 
982 static struct mc44s803_config af9015_mc44s803_config = {
983 	.i2c_address = 0x60,
984 	.dig_out = 1,
985 };
986 
987 static struct tda18218_config af9015_tda18218_config = {
988 	.i2c_address = 0x60,
989 	.i2c_wr_max = 21, /* max wr bytes AF9015 I2C adap can handle at once */
990 };
991 
992 static struct mxl5007t_config af9015_mxl5007t_config = {
993 	.xtal_freq_hz = MxL_XTAL_24_MHZ,
994 	.if_freq_hz = MxL_IF_4_57_MHZ,
995 };
996 
997 static int af9015_tuner_attach(struct dvb_usb_adapter *adap)
998 {
999 	struct dvb_usb_device *d = adap_to_d(adap);
1000 	struct af9015_state *state = d_to_priv(d);
1001 	struct usb_interface *intf = d->intf;
1002 	struct i2c_client *client;
1003 	struct i2c_adapter *adapter;
1004 	int ret;
1005 
1006 	dev_dbg(&intf->dev, "adap id %u\n", adap->id);
1007 
1008 	client = state->demod_i2c_client[adap->id];
1009 	adapter = state->af9013_pdata[adap->id].get_i2c_adapter(client);
1010 
1011 	switch (state->af9013_pdata[adap->id].tuner) {
1012 	case AF9013_TUNER_MT2060:
1013 	case AF9013_TUNER_MT2060_2:
1014 		ret = dvb_attach(mt2060_attach, adap->fe[0], adapter,
1015 				 &af9015_mt2060_config,
1016 				 state->mt2060_if1[adap->id]) == NULL ? -ENODEV : 0;
1017 		break;
1018 	case AF9013_TUNER_QT1010:
1019 	case AF9013_TUNER_QT1010A:
1020 		ret = dvb_attach(qt1010_attach, adap->fe[0], adapter,
1021 				 &af9015_qt1010_config) == NULL ? -ENODEV : 0;
1022 		break;
1023 	case AF9013_TUNER_TDA18271:
1024 		ret = dvb_attach(tda18271_attach, adap->fe[0], 0x60, adapter,
1025 				 &af9015_tda18271_config) == NULL ? -ENODEV : 0;
1026 		break;
1027 	case AF9013_TUNER_TDA18218:
1028 		ret = dvb_attach(tda18218_attach, adap->fe[0], adapter,
1029 				 &af9015_tda18218_config) == NULL ? -ENODEV : 0;
1030 		break;
1031 	case AF9013_TUNER_MXL5003D:
1032 		ret = dvb_attach(mxl5005s_attach, adap->fe[0], adapter,
1033 				 &af9015_mxl5003_config) == NULL ? -ENODEV : 0;
1034 		break;
1035 	case AF9013_TUNER_MXL5005D:
1036 	case AF9013_TUNER_MXL5005R:
1037 		ret = dvb_attach(mxl5005s_attach, adap->fe[0], adapter,
1038 				 &af9015_mxl5005_config) == NULL ? -ENODEV : 0;
1039 		break;
1040 	case AF9013_TUNER_ENV77H11D5:
1041 		ret = dvb_attach(dvb_pll_attach, adap->fe[0], 0x60, adapter,
1042 				 DVB_PLL_TDA665X) == NULL ? -ENODEV : 0;
1043 		break;
1044 	case AF9013_TUNER_MC44S803:
1045 		ret = dvb_attach(mc44s803_attach, adap->fe[0], adapter,
1046 				 &af9015_mc44s803_config) == NULL ? -ENODEV : 0;
1047 		break;
1048 	case AF9013_TUNER_MXL5007T:
1049 		ret = dvb_attach(mxl5007t_attach, adap->fe[0], adapter,
1050 				 0x60, &af9015_mxl5007t_config) == NULL ? -ENODEV : 0;
1051 		break;
1052 	case AF9013_TUNER_UNKNOWN:
1053 	default:
1054 		dev_err(&intf->dev, "unknown tuner, tuner id %02x\n",
1055 			state->af9013_pdata[adap->id].tuner);
1056 		ret = -ENODEV;
1057 	}
1058 
1059 	if (adap->fe[0]->ops.tuner_ops.init) {
1060 		state->tuner_init[adap->id] =
1061 			adap->fe[0]->ops.tuner_ops.init;
1062 		adap->fe[0]->ops.tuner_ops.init = af9015_tuner_init;
1063 	}
1064 
1065 	if (adap->fe[0]->ops.tuner_ops.sleep) {
1066 		state->tuner_sleep[adap->id] =
1067 			adap->fe[0]->ops.tuner_ops.sleep;
1068 		adap->fe[0]->ops.tuner_ops.sleep = af9015_tuner_sleep;
1069 	}
1070 
1071 	return ret;
1072 }
1073 
1074 static int af9015_pid_filter_ctrl(struct dvb_usb_adapter *adap, int onoff)
1075 {
1076 	struct af9015_state *state = adap_to_priv(adap);
1077 	struct af9013_platform_data *pdata = &state->af9013_pdata[adap->id];
1078 	int ret;
1079 
1080 	mutex_lock(&state->fe_mutex);
1081 	ret = pdata->pid_filter_ctrl(adap->fe[0], onoff);
1082 	mutex_unlock(&state->fe_mutex);
1083 
1084 	return ret;
1085 }
1086 
1087 static int af9015_pid_filter(struct dvb_usb_adapter *adap, int index,
1088 			     u16 pid, int onoff)
1089 {
1090 	struct af9015_state *state = adap_to_priv(adap);
1091 	struct af9013_platform_data *pdata = &state->af9013_pdata[adap->id];
1092 	int ret;
1093 
1094 	mutex_lock(&state->fe_mutex);
1095 	ret = pdata->pid_filter(adap->fe[0], index, pid, onoff);
1096 	mutex_unlock(&state->fe_mutex);
1097 
1098 	return ret;
1099 }
1100 
1101 static int af9015_init(struct dvb_usb_device *d)
1102 {
1103 	struct af9015_state *state = d_to_priv(d);
1104 	struct usb_interface *intf = d->intf;
1105 	int ret;
1106 
1107 	dev_dbg(&intf->dev, "\n");
1108 
1109 	mutex_init(&state->fe_mutex);
1110 
1111 	/* init RC canary */
1112 	ret = regmap_write(state->regmap, 0x98e9, 0xff);
1113 	if (ret)
1114 		goto error;
1115 
1116 error:
1117 	return ret;
1118 }
1119 
1120 #if IS_ENABLED(CONFIG_RC_CORE)
1121 struct af9015_rc_setup {
1122 	unsigned int id;
1123 	char *rc_codes;
1124 };
1125 
1126 static char *af9015_rc_setup_match(unsigned int id,
1127 				   const struct af9015_rc_setup *table)
1128 {
1129 	for (; table->rc_codes; table++)
1130 		if (table->id == id)
1131 			return table->rc_codes;
1132 	return NULL;
1133 }
1134 
1135 static const struct af9015_rc_setup af9015_rc_setup_modparam[] = {
1136 	{ AF9015_REMOTE_A_LINK_DTU_M, RC_MAP_ALINK_DTU_M },
1137 	{ AF9015_REMOTE_MSI_DIGIVOX_MINI_II_V3, RC_MAP_MSI_DIGIVOX_II },
1138 	{ AF9015_REMOTE_MYGICTV_U718, RC_MAP_TOTAL_MEDIA_IN_HAND },
1139 	{ AF9015_REMOTE_DIGITTRADE_DVB_T, RC_MAP_DIGITTRADE },
1140 	{ AF9015_REMOTE_AVERMEDIA_KS, RC_MAP_AVERMEDIA_RM_KS },
1141 	{ }
1142 };
1143 
1144 static const struct af9015_rc_setup af9015_rc_setup_hashes[] = {
1145 	{ 0xb8feb708, RC_MAP_MSI_DIGIVOX_II },
1146 	{ 0xa3703d00, RC_MAP_ALINK_DTU_M },
1147 	{ 0x9b7dc64e, RC_MAP_TOTAL_MEDIA_IN_HAND }, /* MYGICTV U718 */
1148 	{ 0x5d49e3db, RC_MAP_DIGITTRADE }, /* LC-Power LC-USB-DVBT */
1149 	{ }
1150 };
1151 
1152 static int af9015_rc_query(struct dvb_usb_device *d)
1153 {
1154 	struct af9015_state *state = d_to_priv(d);
1155 	struct usb_interface *intf = d->intf;
1156 	int ret;
1157 	u8 buf[17];
1158 
1159 	/* read registers needed to detect remote controller code */
1160 	ret = regmap_bulk_read(state->regmap, 0x98d9, buf, sizeof(buf));
1161 	if (ret)
1162 		goto error;
1163 
1164 	/* If any of these are non-zero, assume invalid data */
1165 	if (buf[1] || buf[2] || buf[3]) {
1166 		dev_dbg(&intf->dev, "invalid data\n");
1167 		return ret;
1168 	}
1169 
1170 	/* Check for repeat of previous code */
1171 	if ((state->rc_repeat != buf[6] || buf[0]) &&
1172 	    !memcmp(&buf[12], state->rc_last, 4)) {
1173 		dev_dbg(&intf->dev, "key repeated\n");
1174 		rc_repeat(d->rc_dev);
1175 		state->rc_repeat = buf[6];
1176 		return ret;
1177 	}
1178 
1179 	/* Only process key if canary killed */
1180 	if (buf[16] != 0xff && buf[0] != 0x01) {
1181 		enum rc_proto proto;
1182 
1183 		dev_dbg(&intf->dev, "key pressed %*ph\n", 4, buf + 12);
1184 
1185 		/* Reset the canary */
1186 		ret = regmap_write(state->regmap, 0x98e9, 0xff);
1187 		if (ret)
1188 			goto error;
1189 
1190 		/* Remember this key */
1191 		memcpy(state->rc_last, &buf[12], 4);
1192 		if (buf[14] == (u8)~buf[15]) {
1193 			if (buf[12] == (u8)~buf[13]) {
1194 				/* NEC */
1195 				state->rc_keycode = RC_SCANCODE_NEC(buf[12],
1196 								    buf[14]);
1197 				proto = RC_PROTO_NEC;
1198 			} else {
1199 				/* NEC extended*/
1200 				state->rc_keycode = RC_SCANCODE_NECX(buf[12] << 8 |
1201 								     buf[13],
1202 								     buf[14]);
1203 				proto = RC_PROTO_NECX;
1204 			}
1205 		} else {
1206 			/* 32 bit NEC */
1207 			state->rc_keycode = RC_SCANCODE_NEC32(buf[12] << 24 |
1208 							      buf[13] << 16 |
1209 							      buf[14] << 8  |
1210 							      buf[15]);
1211 			proto = RC_PROTO_NEC32;
1212 		}
1213 		rc_keydown(d->rc_dev, proto, state->rc_keycode, 0);
1214 	} else {
1215 		dev_dbg(&intf->dev, "no key press\n");
1216 		/* Invalidate last keypress */
1217 		/* Not really needed, but helps with debug */
1218 		state->rc_last[2] = state->rc_last[3];
1219 	}
1220 
1221 	state->rc_repeat = buf[6];
1222 	state->rc_failed = false;
1223 
1224 error:
1225 	if (ret) {
1226 		dev_warn(&intf->dev, "rc query failed %d\n", ret);
1227 
1228 		/* allow random errors as dvb-usb will stop polling on error */
1229 		if (!state->rc_failed)
1230 			ret = 0;
1231 
1232 		state->rc_failed = true;
1233 	}
1234 
1235 	return ret;
1236 }
1237 
1238 static int af9015_get_rc_config(struct dvb_usb_device *d, struct dvb_usb_rc *rc)
1239 {
1240 	struct af9015_state *state = d_to_priv(d);
1241 	u16 vid = le16_to_cpu(d->udev->descriptor.idVendor);
1242 
1243 	if (state->ir_mode == AF9015_IR_MODE_DISABLED)
1244 		return 0;
1245 
1246 	/* try to load remote based module param */
1247 	if (!rc->map_name)
1248 		rc->map_name = af9015_rc_setup_match(dvb_usb_af9015_remote,
1249 						     af9015_rc_setup_modparam);
1250 
1251 	/* try to load remote based eeprom hash */
1252 	if (!rc->map_name)
1253 		rc->map_name = af9015_rc_setup_match(state->eeprom_sum,
1254 						     af9015_rc_setup_hashes);
1255 
1256 	/* try to load remote based USB iManufacturer string */
1257 	if (!rc->map_name && vid == USB_VID_AFATECH) {
1258 		/*
1259 		 * Check USB manufacturer and product strings and try
1260 		 * to determine correct remote in case of chip vendor
1261 		 * reference IDs are used.
1262 		 * DO NOT ADD ANYTHING NEW HERE. Use hashes instead.
1263 		 */
1264 		char manufacturer[10];
1265 
1266 		memset(manufacturer, 0, sizeof(manufacturer));
1267 		usb_string(d->udev, d->udev->descriptor.iManufacturer,
1268 			   manufacturer, sizeof(manufacturer));
1269 		if (!strcmp("MSI", manufacturer)) {
1270 			/*
1271 			 * iManufacturer 1 MSI
1272 			 * iProduct      2 MSI K-VOX
1273 			 */
1274 			rc->map_name = af9015_rc_setup_match(AF9015_REMOTE_MSI_DIGIVOX_MINI_II_V3,
1275 							     af9015_rc_setup_modparam);
1276 		}
1277 	}
1278 
1279 	/* load empty to enable rc */
1280 	if (!rc->map_name)
1281 		rc->map_name = RC_MAP_EMPTY;
1282 
1283 	rc->allowed_protos = RC_PROTO_BIT_NEC | RC_PROTO_BIT_NECX |
1284 						RC_PROTO_BIT_NEC32;
1285 	rc->query = af9015_rc_query;
1286 	rc->interval = 500;
1287 
1288 	return 0;
1289 }
1290 #else
1291 	#define af9015_get_rc_config NULL
1292 #endif
1293 
1294 static int af9015_regmap_write(void *context, const void *data, size_t count)
1295 {
1296 	struct dvb_usb_device *d = context;
1297 	struct usb_interface *intf = d->intf;
1298 	int ret;
1299 	u16 reg = ((u8 *)data)[0] << 8 | ((u8 *)data)[1] << 0;
1300 	u8 *val = &((u8 *)data)[2];
1301 	const unsigned int len = count - 2;
1302 	struct req_t req = {WRITE_MEMORY, 0, reg, 0, 0, len, val};
1303 
1304 	ret = af9015_ctrl_msg(d, &req);
1305 	if (ret)
1306 		goto err;
1307 
1308 	return 0;
1309 err:
1310 	dev_dbg(&intf->dev, "failed %d\n", ret);
1311 	return ret;
1312 }
1313 
1314 static int af9015_regmap_read(void *context, const void *reg_buf,
1315 			      size_t reg_size, void *val_buf, size_t val_size)
1316 {
1317 	struct dvb_usb_device *d = context;
1318 	struct usb_interface *intf = d->intf;
1319 	int ret;
1320 	u16 reg = ((u8 *)reg_buf)[0] << 8 | ((u8 *)reg_buf)[1] << 0;
1321 	u8 *val = &((u8 *)val_buf)[0];
1322 	const unsigned int len = val_size;
1323 	struct req_t req = {READ_MEMORY, 0, reg, 0, 0, len, val};
1324 
1325 	ret = af9015_ctrl_msg(d, &req);
1326 	if (ret)
1327 		goto err;
1328 
1329 	return 0;
1330 err:
1331 	dev_dbg(&intf->dev, "failed %d\n", ret);
1332 	return ret;
1333 }
1334 
1335 static int af9015_probe(struct dvb_usb_device *d)
1336 {
1337 	struct af9015_state *state = d_to_priv(d);
1338 	struct usb_interface *intf = d->intf;
1339 	struct usb_device *udev = interface_to_usbdev(intf);
1340 	int ret;
1341 	char manufacturer[sizeof("ITE Technologies, Inc.")];
1342 	static const struct regmap_config regmap_config = {
1343 		.reg_bits    =  16,
1344 		.val_bits    =  8,
1345 	};
1346 	static const struct regmap_bus regmap_bus = {
1347 		.read = af9015_regmap_read,
1348 		.write = af9015_regmap_write,
1349 	};
1350 
1351 	dev_dbg(&intf->dev, "\n");
1352 
1353 	memset(manufacturer, 0, sizeof(manufacturer));
1354 	usb_string(udev, udev->descriptor.iManufacturer,
1355 		   manufacturer, sizeof(manufacturer));
1356 	/*
1357 	 * There is two devices having same ID but different chipset. One uses
1358 	 * AF9015 and the other IT9135 chipset. Only difference seen on lsusb
1359 	 * is iManufacturer string.
1360 	 *
1361 	 * idVendor           0x0ccd TerraTec Electronic GmbH
1362 	 * idProduct          0x0099
1363 	 * bcdDevice            2.00
1364 	 * iManufacturer           1 Afatech
1365 	 * iProduct                2 DVB-T 2
1366 	 *
1367 	 * idVendor           0x0ccd TerraTec Electronic GmbH
1368 	 * idProduct          0x0099
1369 	 * bcdDevice            2.00
1370 	 * iManufacturer           1 ITE Technologies, Inc.
1371 	 * iProduct                2 DVB-T TV Stick
1372 	 */
1373 	if ((le16_to_cpu(udev->descriptor.idVendor) == USB_VID_TERRATEC) &&
1374 	    (le16_to_cpu(udev->descriptor.idProduct) == 0x0099)) {
1375 		if (!strcmp("ITE Technologies, Inc.", manufacturer)) {
1376 			ret = -ENODEV;
1377 			dev_dbg(&intf->dev, "rejecting device\n");
1378 			goto err;
1379 		}
1380 	}
1381 
1382 	state->regmap = regmap_init(&intf->dev, &regmap_bus, d, &regmap_config);
1383 	if (IS_ERR(state->regmap)) {
1384 		ret = PTR_ERR(state->regmap);
1385 		goto err;
1386 	}
1387 
1388 	return 0;
1389 err:
1390 	dev_dbg(&intf->dev, "failed %d\n", ret);
1391 	return ret;
1392 }
1393 
1394 static void af9015_disconnect(struct dvb_usb_device *d)
1395 {
1396 	struct af9015_state *state = d_to_priv(d);
1397 	struct usb_interface *intf = d->intf;
1398 
1399 	dev_dbg(&intf->dev, "\n");
1400 
1401 	regmap_exit(state->regmap);
1402 }
1403 
1404 /*
1405  * Interface 0 is used by DVB-T receiver and
1406  * interface 1 is for remote controller (HID)
1407  */
1408 static const struct dvb_usb_device_properties af9015_props = {
1409 	.driver_name = KBUILD_MODNAME,
1410 	.owner = THIS_MODULE,
1411 	.adapter_nr = adapter_nr,
1412 	.size_of_priv = sizeof(struct af9015_state),
1413 
1414 	.generic_bulk_ctrl_endpoint = 0x02,
1415 	.generic_bulk_ctrl_endpoint_response = 0x81,
1416 
1417 	.probe = af9015_probe,
1418 	.disconnect = af9015_disconnect,
1419 	.identify_state = af9015_identify_state,
1420 	.firmware = AF9015_FIRMWARE,
1421 	.download_firmware = af9015_download_firmware,
1422 
1423 	.i2c_algo = &af9015_i2c_algo,
1424 	.read_config = af9015_read_config,
1425 	.frontend_attach = af9015_af9013_frontend_attach,
1426 	.frontend_detach = af9015_frontend_detach,
1427 	.tuner_attach = af9015_tuner_attach,
1428 	.init = af9015_init,
1429 	.get_rc_config = af9015_get_rc_config,
1430 	.get_stream_config = af9015_get_stream_config,
1431 	.streaming_ctrl = af9015_streaming_ctrl,
1432 
1433 	.get_adapter_count = af9015_get_adapter_count,
1434 	.adapter = {
1435 		{
1436 			.caps = DVB_USB_ADAP_HAS_PID_FILTER |
1437 				DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF,
1438 			.pid_filter_count = 32,
1439 			.pid_filter = af9015_pid_filter,
1440 			.pid_filter_ctrl = af9015_pid_filter_ctrl,
1441 
1442 			.stream = DVB_USB_STREAM_BULK(0x84, 6, 87 * 188),
1443 		}, {
1444 			.caps = DVB_USB_ADAP_HAS_PID_FILTER |
1445 				DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF,
1446 			.pid_filter_count = 32,
1447 			.pid_filter = af9015_pid_filter,
1448 			.pid_filter_ctrl = af9015_pid_filter_ctrl,
1449 
1450 			.stream = DVB_USB_STREAM_BULK(0x85, 6, 87 * 188),
1451 		},
1452 	},
1453 };
1454 
1455 static const struct usb_device_id af9015_id_table[] = {
1456 	{ DVB_USB_DEVICE(USB_VID_AFATECH, USB_PID_AFATECH_AF9015_9015,
1457 		&af9015_props, "Afatech AF9015 reference design", NULL) },
1458 	{ DVB_USB_DEVICE(USB_VID_AFATECH, USB_PID_AFATECH_AF9015_9016,
1459 		&af9015_props, "Afatech AF9015 reference design", NULL) },
1460 	{ DVB_USB_DEVICE(USB_VID_LEADTEK, USB_PID_WINFAST_DTV_DONGLE_GOLD,
1461 		&af9015_props, "Leadtek WinFast DTV Dongle Gold", RC_MAP_LEADTEK_Y04G0051) },
1462 	{ DVB_USB_DEVICE(USB_VID_PINNACLE, USB_PID_PINNACLE_PCTV71E,
1463 		&af9015_props, "Pinnacle PCTV 71e", NULL) },
1464 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_KWORLD_399U,
1465 		&af9015_props, "KWorld PlusTV Dual DVB-T Stick (DVB-T 399U)", NULL) },
1466 	{ DVB_USB_DEVICE(USB_VID_VISIONPLUS, USB_PID_TINYTWIN,
1467 		&af9015_props, "DigitalNow TinyTwin", RC_MAP_AZUREWAVE_AD_TU700) },
1468 	{ DVB_USB_DEVICE(USB_VID_VISIONPLUS, USB_PID_AZUREWAVE_AD_TU700,
1469 		&af9015_props, "TwinHan AzureWave AD-TU700(704J)", RC_MAP_AZUREWAVE_AD_TU700) },
1470 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_TERRATEC_CINERGY_T_USB_XE_REV2,
1471 		&af9015_props, "TerraTec Cinergy T USB XE", NULL) },
1472 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_KWORLD_PC160_2T,
1473 		&af9015_props, "KWorld PlusTV Dual DVB-T PCI (DVB-T PC160-2T)", NULL) },
1474 	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_VOLAR_X,
1475 		&af9015_props, "AVerMedia AVerTV DVB-T Volar X", RC_MAP_AVERMEDIA_M135A) },
1476 	{ DVB_USB_DEVICE(USB_VID_XTENSIONS, USB_PID_XTENSIONS_XD_380,
1477 		&af9015_props, "Xtensions XD-380", NULL) },
1478 	{ DVB_USB_DEVICE(USB_VID_MSI_2, USB_PID_MSI_DIGIVOX_DUO,
1479 		&af9015_props, "MSI DIGIVOX Duo", RC_MAP_MSI_DIGIVOX_III) },
1480 	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_VOLAR_X_2,
1481 		&af9015_props, "Fujitsu-Siemens Slim Mobile USB DVB-T", NULL) },
1482 	{ DVB_USB_DEVICE(USB_VID_TELESTAR,  USB_PID_TELESTAR_STARSTICK_2,
1483 		&af9015_props, "Telestar Starstick 2", NULL) },
1484 	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A309,
1485 		&af9015_props, "AVerMedia A309", NULL) },
1486 	{ DVB_USB_DEVICE(USB_VID_MSI_2, USB_PID_MSI_DIGI_VOX_MINI_III,
1487 		&af9015_props, "MSI Digi VOX mini III", RC_MAP_MSI_DIGIVOX_III) },
1488 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_KWORLD_395U,
1489 		&af9015_props, "KWorld USB DVB-T TV Stick II (VS-DVB-T 395U)", NULL) },
1490 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_KWORLD_395U_2,
1491 		&af9015_props, "KWorld USB DVB-T TV Stick II (VS-DVB-T 395U)", NULL) },
1492 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_KWORLD_395U_3,
1493 		&af9015_props, "KWorld USB DVB-T TV Stick II (VS-DVB-T 395U)", NULL) },
1494 	{ DVB_USB_DEVICE(USB_VID_AFATECH, USB_PID_TREKSTOR_DVBT,
1495 		&af9015_props, "TrekStor DVB-T USB Stick", RC_MAP_TREKSTOR) },
1496 	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A850,
1497 		&af9015_props, "AverMedia AVerTV Volar Black HD (A850)", NULL) },
1498 	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A805,
1499 		&af9015_props, "AverMedia AVerTV Volar GPS 805 (A805)", NULL) },
1500 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_CONCEPTRONIC_CTVDIGRCU,
1501 		&af9015_props, "Conceptronic USB2.0 DVB-T CTVDIGRCU V3.0", NULL) },
1502 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_KWORLD_MC810,
1503 		&af9015_props, "KWorld Digital MC-810", NULL) },
1504 	{ DVB_USB_DEVICE(USB_VID_KYE, USB_PID_GENIUS_TVGO_DVB_T03,
1505 		&af9015_props, "Genius TVGo DVB-T03", NULL) },
1506 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_KWORLD_399U_2,
1507 		&af9015_props, "KWorld PlusTV Dual DVB-T Stick (DVB-T 399U)", NULL) },
1508 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_KWORLD_PC160_T,
1509 		&af9015_props, "KWorld PlusTV DVB-T PCI Pro Card (DVB-T PC160-T)", NULL) },
1510 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_SVEON_STV20,
1511 		&af9015_props, "Sveon STV20 Tuner USB DVB-T HDTV", NULL) },
1512 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_TINYTWIN_2,
1513 		&af9015_props, "DigitalNow TinyTwin v2", RC_MAP_DIGITALNOW_TINYTWIN) },
1514 	{ DVB_USB_DEVICE(USB_VID_LEADTEK, USB_PID_WINFAST_DTV2000DS,
1515 		&af9015_props, "Leadtek WinFast DTV2000DS", RC_MAP_LEADTEK_Y04G0051) },
1516 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_KWORLD_UB383_T,
1517 		&af9015_props, "KWorld USB DVB-T Stick Mobile (UB383-T)", NULL) },
1518 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_KWORLD_395U_4,
1519 		&af9015_props, "KWorld USB DVB-T TV Stick II (VS-DVB-T 395U)", NULL) },
1520 	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A815M,
1521 		&af9015_props, "AverMedia AVerTV Volar M (A815Mac)", NULL) },
1522 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_TERRATEC_CINERGY_T_STICK_RC,
1523 		&af9015_props, "TerraTec Cinergy T Stick RC", RC_MAP_TERRATEC_SLIM_2) },
1524 	/* XXX: that same ID [0ccd:0099] is used by af9035 driver too */
1525 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_TERRATEC_CINERGY_T_STICK_DUAL_RC,
1526 		&af9015_props, "TerraTec Cinergy T Stick Dual RC", RC_MAP_TERRATEC_SLIM) },
1527 	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A850T,
1528 		&af9015_props, "AverMedia AVerTV Red HD+ (A850T)", NULL) },
1529 	{ DVB_USB_DEVICE(USB_VID_GTEK, USB_PID_TINYTWIN_3,
1530 		&af9015_props, "DigitalNow TinyTwin v3", RC_MAP_DIGITALNOW_TINYTWIN) },
1531 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_SVEON_STV22,
1532 		&af9015_props, "Sveon STV22 Dual USB DVB-T Tuner HDTV", RC_MAP_MSI_DIGIVOX_III) },
1533 	{ }
1534 };
1535 MODULE_DEVICE_TABLE(usb, af9015_id_table);
1536 
1537 /* usb specific object needed to register this driver with the usb subsystem */
1538 static struct usb_driver af9015_usb_driver = {
1539 	.name = KBUILD_MODNAME,
1540 	.id_table = af9015_id_table,
1541 	.probe = dvb_usbv2_probe,
1542 	.disconnect = dvb_usbv2_disconnect,
1543 	.suspend = dvb_usbv2_suspend,
1544 	.resume = dvb_usbv2_resume,
1545 	.reset_resume = dvb_usbv2_reset_resume,
1546 	.no_dynamic_id = 1,
1547 	.soft_unbind = 1,
1548 };
1549 
1550 module_usb_driver(af9015_usb_driver);
1551 
1552 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
1553 MODULE_DESCRIPTION("Afatech AF9015 driver");
1554 MODULE_LICENSE("GPL");
1555 MODULE_FIRMWARE(AF9015_FIRMWARE);
1556